Feet per second.
ft/s to Maches Converter — ft/s to Ma
Convert ft/s (ft/s) to Mach (Ma) using the exact conversion factor (1 ft/s = 0.0008957066 mach). See the formula, worked examples, and conversion table.
ft/s to Maches converter
Converter
Speed Converter
Convert road, aviation, marine, lab, and scientific speed units.
Context values
Some unit families need one extra value for a physically accurate result.
Mach at standard sea-level conditions.
Result = input x 0.3048 / 340.29.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting ft/s to Maches
ft/s and Mach both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Specifically: Feet per second, and mach at standard sea-level conditions.
Formula
maches = ft/s × 0.000895706603191
This factor comes from each unit's defined relationship to the category's base unit: 1 ft/s equals 0.3048 base units, and 1 mach equals 340.29 base units, so dividing one by the other gives the direct ft/s-to-mach factor of 0.000895706603191.
Simple example
1 ft/s × 0.0008957066032 = 0.0008957066 Ma
1 ft/s = 0.0008957066 maches.
Real-world example
10 ft/s × 0.0008957066032 = 0.008957066 Ma
10 ft/s = 0.008957066 maches.
Conversion table
| ft/s (ft/s) | Mach (Ma) |
|---|---|
| 1 ft/s | 0.0008957066 Ma |
| 5 ft/s | 0.004478533 Ma |
| 10 ft/s | 0.008957066 Ma |
| 25 ft/s | 0.0223926651 Ma |
| 50 ft/s | 0.0447853302 Ma |
| 100 ft/s | 0.0895706603 Ma |
Reverse conversion: Mach to ft/s
0.0008957066 Ma × 1116.437008 = 0.9999999964 ft/s
0.0008957066 maches = 0.9999999964 ft/s.
ft/s = maches × 1116.43700787
For a page dedicated to this direction, see Mach to ft/s.
Understanding the ft/s (ft/s)
Feet per second.
Understanding the Mach (Ma)
Mach at standard sea-level conditions.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many maches are in 1 ft/s?
1 ft/s equals 0.0008957066 maches, using the exact defined conversion factor rather than an estimate.
How do I convert ft/s to mach?
Multiply the ft/s value by 0.0008957066032. The converter above does this instantly to whatever precision you set.
How do I convert mach back to ft/s?
Use the reverse factor: 1 mach equals 1,116.437008 ft/s. You can also use the swap control in the converter above to flip the direction instantly.
What is a ft/s?
ft/s (ft/s) is a unit of speed.
What is a mach?
Mach (Ma) is a unit of speed.
Is the ft/s to mach conversion exact?
Yes. Both ft/s and mach are defined by fixed standards rather than physical artifacts, so the factor of 0.0008957066032 used above is exact to as many digits as you choose to display.